1#ifndef __ASM_SH_PGTABLE_3LEVEL_H
 2#define __ASM_SH_PGTABLE_3LEVEL_H
 3
 
 4#include <asm-generic/pgtable-nopud.h>
 5
 6/*
 7 * Some cores need a 3-level page table layout, for example when using
 8 * 64-bit PTEs and 4K pages.
 9 */
10#define PAGETABLE_LEVELS	3
11
12#define PTE_MAGNITUDE		3	/* 64-bit PTEs on SH-X2 TLB */
13
14/* PGD bits */
15#define PGDIR_SHIFT		30
16
17#define PTRS_PER_PGD		4
18#define USER_PTRS_PER_PGD	2
19
20/* PMD bits */
21#define PMD_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))
22#define PMD_SIZE	(1UL << PMD_SHIFT)
23#define PMD_MASK	(~(PMD_SIZE-1))
24
25#define PTRS_PER_PMD	((1 << PGDIR_SHIFT) / PMD_SIZE)
26
27#define pmd_ERROR(e) \
28	printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
29
30typedef struct { unsigned long long pmd; } pmd_t;
31#define pmd_val(x)	((x).pmd)
32#define __pmd(x)	((pmd_t) { (x) } )
33
34static inline unsigned long pud_page_vaddr(pud_t pud)
35{
36	return pud_val(pud);
37}
38
39#define pmd_index(address)	(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
40static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
41{
42	return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
43}
44
45#define pud_none(x)	(!pud_val(x))
46#define pud_present(x)	(pud_val(x))
47#define pud_clear(xp)	do { set_pud(xp, __pud(0)); } while (0)
48#define	pud_bad(x)	(pud_val(x) & ~PAGE_MASK)
49
50/*
51 * (puds are folded into pgds so this doesn't get actually called,
52 * but the define is needed for a generic inline function.)
53 */
54#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
55
56#endif /* __ASM_SH_PGTABLE_3LEVEL_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __ASM_SH_PGTABLE_3LEVEL_H
 3#define __ASM_SH_PGTABLE_3LEVEL_H
 4
 5#define __ARCH_USE_5LEVEL_HACK
 6#include <asm-generic/pgtable-nopud.h>
 7
 8/*
 9 * Some cores need a 3-level page table layout, for example when using
10 * 64-bit PTEs and 4K pages.
11 */
12#define PAGETABLE_LEVELS	3
13
14#define PTE_MAGNITUDE		3	/* 64-bit PTEs on SH-X2 TLB */
15
16/* PGD bits */
17#define PGDIR_SHIFT		30
18
19#define PTRS_PER_PGD		4
20#define USER_PTRS_PER_PGD	2
21
22/* PMD bits */
23#define PMD_SHIFT	(PAGE_SHIFT + (PAGE_SHIFT - PTE_MAGNITUDE))
24#define PMD_SIZE	(1UL << PMD_SHIFT)
25#define PMD_MASK	(~(PMD_SIZE-1))
26
27#define PTRS_PER_PMD	((1 << PGDIR_SHIFT) / PMD_SIZE)
28
29#define pmd_ERROR(e) \
30	printk("%s:%d: bad pmd %016llx.\n", __FILE__, __LINE__, pmd_val(e))
31
32typedef struct { unsigned long long pmd; } pmd_t;
33#define pmd_val(x)	((x).pmd)
34#define __pmd(x)	((pmd_t) { (x) } )
35
36static inline unsigned long pud_page_vaddr(pud_t pud)
37{
38	return pud_val(pud);
39}
40
41#define pmd_index(address)	(((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
42static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
43{
44	return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
45}
46
47#define pud_none(x)	(!pud_val(x))
48#define pud_present(x)	(pud_val(x))
49#define pud_clear(xp)	do { set_pud(xp, __pud(0)); } while (0)
50#define	pud_bad(x)	(pud_val(x) & ~PAGE_MASK)
51
52/*
53 * (puds are folded into pgds so this doesn't get actually called,
54 * but the define is needed for a generic inline function.)
55 */
56#define set_pud(pudptr, pudval) do { *(pudptr) = (pudval); } while(0)
57
58#endif /* __ASM_SH_PGTABLE_3LEVEL_H */